Is this glyph ever useful, considering that we have to waste less Holy Power to keep Inquisition up compared to the non-glyphed version, or is it always just a straight dps loss?

3. http://www.wowhead.com/item=83107 - Reduces the range of Exorcism to melee range, but causes 25% damage to all enemies within 8 yards of the primary target.
Does this mean that a part of Exorcism's damage is shared among all enemies within 8 yards, or is that an extra added amount of damage (on top of the default single target Exorcism)?

4. http://www.wowhead.com/item=41105 - Increases your damage by 3% per Holy Power spent after you cast Word of Glory or Eternal Flame on a friendly target. Lasts 6 sec.

Is this at all useful for Retri in PvE, or is it not worth the spent Holy Power?

Number 4 is only useful if you're below level 80, or if you spent a lot of time away from the boss (air phase, bad AoE, etc - which I believe is none in current tier). WoG hits nearly as hard as TV, but with the mastery component, TV is always better than WoG. When you're below 80 though, there's no mastery, so WoG and TV are about the same.

Number 4 is only useful if you're below level 80, or if you spent a lot of time away from the boss (air phase, bad AoE, etc - which I believe is none in current tier). WoG hits nearly as hard as TV, but with the mastery component, TV is always better than WoG. When you're below 80 though, there's no mastery, so WoG and TV are about the same.

Glyph of Word of Glory doesn't interact with Harsh Words anymore, so that's not even relevant to it now. :P